Meat chopper



A. JAHN MEAT CHOPPER Filed Feb. 25, 1930 sept. 27, 1932.

- 15- antee that the blades bear uniformly Patented Seplt.l2z7r, 1932 PATENT OFFICE aueus'r JAHN, or HAMBURG, GERMANY mEa'r cnorran' Application led'lfebruary 25 1930, Serial No. 431,808, and in` Germany September 25, 1929.

Meat chopping knives are-known with interchan eable double-ed ed blades, one end 4ofwhic engages fork-li e with afpin of the knife body, their other likewise forked end 5 being clamped onto the collar side of the knife body. These known knife blades are substan: tially of U-shaped cross section and clam ed onto the knife body in` such a manner t at they cannot shift transversely tothe cutting direction and consequently cannot adjust themselves to one anotherand to the perforated discs.

The disadvantage of such blades consists in the rigid fastemng, which .offers no guaralong theirentire length, and all blades at t forated discs are subjected to considerable and premature wear. j The invention relatesto a meat chopper knife with exchangeable double edged blades engaging behind pins .on the free ends of the` knife arms and'connected to the knife body without/special fastening means, and 'overcomes -this disadvantage in a very simple manner inthat the known blades of rectangu-` lar or trapezium shaped cross-section engage.

l 4f" panying drawing 1n which F 1g.` 1 shows in side elevation a lmife with curved blades.' j

`Fig. 2 is a section on line 2-2 ofFig. 1.

cording to Fig. l, but Without knife blades.

e sametime, `on the perforated discs. rThus, the qual-` ity 'of the material cut isunfavourablyaffected, and the blades together with the per-l Fig.' 3 shows a part of the knife body, ac-y Fig. 4 'shows in longitudinal section a curved lmife-blade.

Fig. 5 shows in side elevation a knife with `straight blades.'

Fig. .6.is a top plan view in section on line 6-6`of Fig. 5. Y Fig., 7 showsa longitudinal section through ,ja straight knife bla Fig. `84 isa cross section through a knife v blade.

Figs. 9 and 10 show two forms of construction of a knife blade in' topplan view.`

The knife armsb arranged around the collar a have, according to the invention, each on its free end apin d with head 0. 6o Over each pin d engages from-the rear a cavity e provided in the end of a knife blade f'. The other end of the knifeblade is rounded with a radius r and engages in a slot gin the knife body. The cavity e engages with 65 lateral play L, over the pin d so that the knife blade canw shift in lateral vdirection to its bearing surfaceby the amount of this play, whereby the knife blades, after being inserted between two perforated discs of a meat chopper lcan be accurately adjusted to one another.. When the knife blade is mounted on the knife body the cavity e of the knife blade f is placed from the side over the pin d, the knife blade being then `swung out around this pin so that its other end engages with the corresponding slot glof the knife body. Itl may be further mentioned, that the pin-a3 ma. be of, any desired cross section, i. e. roun as shown in Fig. 2 or square as 80 shown in Fig. 6. v v

1. The combination of a meat chopper knife body having arms thereon, a head at the end of each arm, a groove at the base of each arm S5 and on the sameside as'the head, the channel thereof extending transversely of the arm, blades h'aving a notched end to fit with lateral pla under the head, the length of eaeh blade ing such thatwhen the notched 9 prisin-g a body to end is engaged under the head the other end canv be swung sideways into the oove, the groove engaging that end of the lade. V

2. A meat cho per knife assembly complates and rotated by the shaft of the meat chopper, arms yon said body, a pin having an enlarged 'head at the'. end of each arm, a groove on, the samesde of each arm atl its inner end, 'and blades each having a notch in one end Wider than the pin, the other end .of each blade being arcuate, the length 'of each blade bein such that when the notch is engaged under t e head of the pin the arcuate end can be slid into the groove. at the inner end of the arm.

In testimony whereof I aiix my signature.

. AUGUST JAHN.`

mounted between cutter 

